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Transcript of Cell Phones
Effects on Society
Effects on the Environment
Two-way radios connected to the land line system
Not many frequencies
Not many people could talk at the same time
The concept of cellular technology was introduced by Bell Laboratories
Geographical areas would be broken into small adjacent cells and many more car phones could be used at one time
Motorola produced a working DynaTAC prototype
The first wireless portable cell phone in the world
A network of cell sites would be supported by a call-switching infrastructure that tracked users as they moved through the network.
The world's first portable cellular telephone - Motorola DynaTAC 8000X, which weighed two pounds and cost $3,995. The first version was developed in 1973.
It's battery could provide 1 hour of talk time and store 30 phone numbers.
Nokia's first mobile phone a boombox-looking device. It weighed 21 pounds and was introduced in 1982.
Motorola gave those looking for a sleek phone, a small, lightweight phone, weighing 3.1 ounces, in 1996.
Kyocera's smart phone hit the market in 2001 and cost between $400 and $500. It contained 8MB of memory.
Motorola Razr - This phone took sleek design and shape to another level in 2004. It was one of the most popular handsets on the market and was offered by almost every major wireless carrier.
The iPhone - one of the most anticipated phones on the market featured a touch screen MP3 player camera and thousands of "apps"
History of the Cell Phone
Changed how we reach people and communicate
People are flexible – work on the road (or vacation).
Cell phones contain toxic metals that can pollute the environment and threaten human health
As of 2003, there are more than 500 million mobile phones waiting to be recycled in the US; either in drawers, or already in the waste stream. Another 100 million or so will be added this year and even more in the coming years.